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检索条件"任意字段=7th Asia-Pacific Web Conference on Web Technologies Research and Development - APWeb 2005"

共 53 条记录，以下是31-40 订阅

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An LOD model for graph visualization and its application in web navigation

An LOD model for graph visualization and its application in ...

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7th asia-pacific web conference

作者： Liu, SX Pan, Y Yang, LP Liu, WY IBM China Res Lab Beijing 100085 Peoples R China City Univ Hong Kong Dept Comp Sci Kowloon Hong Kong Peoples R China

ISBN: (纸本)354025207X

this paper presents a new method for visualizing and navigating huge graphs. the main feature of this method is that it applies Level-Of-Detail (LOD) strategy to graph visualization and navigation, and allows the user to navigate the graph in real time. First, the algorithm calculates the weight for each vertex by an improved link analysis method. Second, representative vertices with higher weights are selected. third, a wavefront algorithm is utilized to cluster neighboring vertices for each representative vertex. this step produces several clusters characterized by the representative vertices. then steps two and three are repeated in each cluster to form an LOD tree. Finally, we use a force directed method to draw the sub-graph under the non-leaf node of the LOD tree. Based on the proposed method, we develop a graph visualization and navigation system-DynamicViewer. We then demonstrate its application in web navigation. With Dynamic Viewer, the user can have an overview of the web and then browse individual information on demand. the experiment results show that Dynamic Viewer enhances the ability to provide the right information to the user.

关键词： web browsers

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CORE: A search and browsing tool for semantic instances of web sites

CORE: A search and browsing tool for semantic instances of w...

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7th asia-pacific web conference on web technologies research and development - apweb 2005

作者： Naing, Myo-Myo Lim, Ee-Peng Chiang, Roger H. L. Centre for Advanced Information Systems School of Computer Engineering Nanyang Technological University Nanyang Avenue N4-B3C-13 Singapore 639798 Singapore Information Systems Department College of Business University of Cincinnati Ohio 45221-0211 United States

web pages from a web site can often be associated with some semantic concepts, and relationships can exist between pairs of web pages. By deriving these concepts and relationship instances, web pages can be searched, browsed or even reorganized based on their associated concepts and relationships. In this paper, we present a search and browsing tool, CORE, for concept and relationship instances which are derived using some web classification and link chain extraction techniques. CORE assists users to quickly search and navigate the concept and relationship instances using a single user interface. © Springer-Verlag Berlin Heidelberg 2005.

关键词： web browsers

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A formal approach to evaluate and compare internet search engines: A case study on searching the chinese web

A formal approach to evaluate and compare internet search en...

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7th asia-pacific web conference on web technologies research and development - apweb 2005

作者： Li, Kin F. Wang, Yali Nishio, Shojiro Yu, Wei Department of Electrical and Computer Engineering University of Victoria Canada Graduate School of Information Science and Technology Osaka University Japan

the Internet has become an indispensable tool for finding information quickly using a search engine. the usefulness of the information retrieved, is open to questions. It depends on the keyword used, the search criteria, the judgement of the user, and also on the effectiveness of the search engine. there are some published works, mostly online, that evaluate Internet search engines. Most of them, however, are either informal, focused on a few aspects, subjectively qualitative, or ad-hoc without a rigorous approach. In this work, we propose a formal mathematical model to evaluate and compare search engines. As a case study, five popular Chinese search engines are examined. © Springer-Verlag Berlin Heidelberg 2005.

关键词： World Wide web

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A pattern-based voting approach for concept discovery on the web

A pattern-based voting approach for concept discovery on the...

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7th asia-pacific web conference

作者： Chen, J Zhang, ZG Li, Q Li, XM City Univ Hong Kong Dept Comp Engn & Informat Kowloon Hong Kong Peoples R China Peking Univ Sch Elect Engn & Comp Sci Dept Comp Sci & Technol Beijing Peoples R China

ISBN: (纸本)354025207X

Automatically discovering concepts is not only a fundamental task in knowledge capturing and ontology engineering processes, but also a key step of many applications in information retrieval. For such a task, pattern-based approaches and statistics-based approaches are widely used, between which the former ones eventually turned out to be more precise. However, the effective patterns in such approaches are usually defined manually. It involves much time and human labor, and considers only a limited set of effective patterns. In our research, we accomplish automatically obtaining patterns through frequent sequence mining. A voting approach is then presented that can determine whether a sentence contains a concept and accurately identify it. Our algorithm includes three steps: pattern mining, pattern refining and concept discovery. In our experimental study, we use several traditional measures, precision, recall and F1 value, to evaluate the performance of our approach. the experimental results not only verify the validity of the approach, but also illustrate the relationship between performance and the parameters of the algorithm.

关键词： World Wide web

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Providing geographic-multidimensional decision support over the web

Providing geographic-multidimensional decision support over ...

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7th asia-pacific web conference on web technologies research and development - apweb 2005

作者： Silva, Joel Da Times, Valéria C. Fidalgo, Robson N. Barros, Roberto S. M. Center for Informatics Federal University of Pernambuco Cidade Universitária P. O. Box 7851 Recife - PE 50.732-970 Brazil

For the last years, many researchers have been addressing their efforts to try to solve the problem regarding the integration between analytic and geographic processing systems. the main goal is to provide users with a system capable of processing both geographic and multidimensional data by abstracting the complexity of separately querying and analyzing these data in a decision making process. However, this integration may not be fully achieved yet or may be built by using proprietary technologies. this paper presents a service integration model for supporting analytic and/or geographic requests over the web. this model has been implemented by a web Service, named GMLA WS, which is strongly based on standardized technologies such as web Services, Java and XML. the GMLA WS query results are displayed using a web browser as maps and/or tables for helping users in their decision making. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Decision support systems

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A neural network approach to web graph processing

A neural network approach to Web graph processing

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7th asia-pacific web conference on web technologies research and development - apweb 2005

作者： Tsoi, Ah Chung Scarselli, Franco Gori, Marco Hagenbuchner, Markus Yong, Sweah Liang Australian Research Council GPO Box 2702 Canberra ACT 2601 Australia University of Siena Siena Italy Faculty of Informatics University of Wollongong Northfileds Ave. Wollongong NSW 2522 Australia

In this paper, we will provide an overview of some of the more recent developments in web graph processing using the classic Google page rank equation as popularized by Brins and Page [1], and its modifications, to handle page rank and personalized page rank determinations. It is shown that one may progressively modify the linear matrix stochastic equation underlying the Google page rank determinations [1] to one which may contain neural network formulations. Furthermore the capability of these modifications in determining personalized page ranks is demonstrated through a number of examples based on the web repository WT10G. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Data processing

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Databases and the semantic web: Data semantics revisited

Databases and the semantic web: Data semantics revisited

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7th asia-pacific web conference

作者： Borgida, A Mylopoulos, J Rutgers State Univ Dept Comp Sci Piscataway NJ 08855 USA Univ Toronto Dept Comp Sci Toronto ON Canada

ISBN: (纸本)354025207X

Two panels, held at SIGMOD'98 (Seattle, June 4) and CAiSE'98 (Pisa, June 11), discussed the topic of data semantics and its place in Databases research in the next millennium. the first, titled "Next Generation Database Systems Won't Work Without Semantics" included as panelists Philip Bernstein, Umesh Dayal, John Mylopoulos (chair), Sham Navathe and Marek Rusinkiewicz. the second one, titled "Data Semantics Can't Fail this Time!" included as panelists Michael Brodie, Stefano Ceri, John Mylopoulos (chair), and Arne Solvberg. Atypically for panels, participants to both discussions generally agreed that data semantics will be the problem for Databases researchers to tackle in the near future. Stefano Ceri summed up well the sentiments of the discussions by declaring that "...the three most important research problems in Databases used to be 'Performance', 'Performance', and 'Performance';in years to come, the three most important and challenging problems will be 'Semantics', 'Semantics', and 'Semantics'..." What is the data semantics problem? In what sense did it "fail" in the past?... And why did the experts agree - unanimously - that the situation was about to change? We review the data semantics problem and its long history in Databases research, noting the reasons why solutions of the past won't work in the future. We then review recent work on the Semantic web and the directions it is taking. Finally, we sketch two new directions for research on data semantics.

关键词： Semantics

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Classifying criminal charges in chinese for web-based legal services

Classifying criminal charges in chinese for web-based legal ...

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7th asia-pacific web conference on web technologies research and development - apweb 2005

作者： Liu, Chao-Lin Liao, Ting-Ming Department of Computer Science National Chengchi University Taipei 11605 Taiwan

Along with the increasing accessibility of the web, services available on the web have expanded into several aspects of our lives. As a relatively new comer, web-based legal services have become another front in the arena. For instance, through such services, people obtain rough pictures of the lawsuits of interest before they decide whether and how to approach their counselors. As a step toward offering online legal services, we propose algorithms for classifying criminal charges in Chinese based on the alleged criminal violations that the district attorney used to prosecute the defendants. the classification is not trivial because some prosecutions involve violations of multiple articles in the criminal law, and we wish to classify lawsuits as precisely as possible. We employ techniques of instance-based classification and introspective learning for the classification task, and achieve satisfactory initial results for classifying charges of larceny and gambling. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Legacy systems

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PODWIS: A personalized tool for ontology development in domain specific web Information system

PODWIS: A personalized tool for ontology development in doma...

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7th asia-pacific web conference on web technologies research and development - apweb 2005

作者： Tang, Lv-An Li, Hongyan Pan, Zhiyong Tan, Shaohua Qui, Baojun Tang, Shiwei Wang, Jianjun National Laboratory on Machine Perception School of Electronics Engineering and Computer Science Peking University Beijing 100871 China

Complex structure and varying requirements increase the difficulties in developing domain specific web Information Systems. People appeal to a smart tool to customize web Information Systems automatically. To achieve that goal, this article makes following contributions: (1) Proposes the concept of web Information System ontology to express the integrated domain semantics and maintain their relationships as a hierarchal structure;(2) Implements the Personalized tool for Ontology development in domain specific web Information System(PODWIS) with algorithms for (a) leaning the user's behaviors while building the ontology, (b) mining the repeated contents and composing reusable components, (c) guiding developer's work efficiently with high quality;(3)Designs two different self-learning strategies: online learning and offline learning to meet different situations;(4) Gives a semi-automatic tool to generate the personalized information system(includes user interface, operations and database access) based on ontology;(5)Shows the feasibility of this technique in practical application. © Springer-Verlag Berlin Heidelberg 2005.

关键词： World Wide web

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Components for building desktop-application-like interface in web applications

Components for building desktop-application-like interface i...

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7th asia-pacific web conference on web technologies research and development - apweb 2005

作者： Chang, George Hsieh, Jung-Wei Calixto, Pedro Kean University Mathematics and Computer Science Department 1000 Morris Avenue Union NJ 07083 United States Parsons School of Design Design and Technology 2W 13th Street New York NY 10011 United States

web-based applications have become ubiquitous over the past few years. these applications rely on a simple document markup language called HTML. However, the click-and-link interface provide by HTML-based technology is too limited for building next generation highly interactive web applications. Hence, we investigate a technique based on a highly interactive rich internet application approach for building desktop-application-like web applications. We discuss the design and architecture of our client and server components, show the efficient use of client, server, and network resources, and conduct server-side component performance evaluations. Usability, universality, reusability and usefulness of our components are our primary objectives. Desktop graphical user interface features such as drag-and-drop, image zoom-in, and folder navigation are now possible for building web-based applications using our components. © Springer-Verlag Berlin Heidelberg 2005.

关键词： World Wide web

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